Jiffy Peat Pots 3.5 Inch Deep Square Seed Starting Biodegradable #240-800 ea Full Case by Growers Solution Jiffy 3.5 inch by 4 inch square Peat Pot #240 sold in full case quantity of 800 per case. The fast and easy way to transfer your plants to the ground without disturbing the roots. Peat Pots are biodegradable and contain vital plant nutrients. These pots allow plant roots to naturally air prune as they grow through the pot which enhanced root development Using Jiffy Peat pots will minimize root shock.